All posts - Undecided with Matt Ferrell

A solar cell next to a chemical bonds cube

Why Waiting for Perovskite Solar Isn’t Worth It (Solar 3.0)

By Jon Okun1 week ago

Energy Production

Matt Ferrell stood in front of his house in the snow

Geothermal vs Air Source Heat Pump: Which is Worth It?

By Matt Ferrell2 weeks ago

Smart Home

Someone holding a small flywheel in both hands

How 40-Ton Spinning Wheels Are Saving the Power Grid

By Jon Okun3 weeks ago

Energy Storage

Chunk of aluminum next to a battery cell

Why Aluminum Batteries Could Beat Lithium

By Heather Hunsperger1 month ago

Energy Storage

Matt Ferrell in front of an outside heat pump

Why Everyone Gets Heat Pumps Wrong

By Vincent M.February 3, 2026

Tech

A Bluetti Sodium Battery

Are Sodium Batteries Already Dead?

By Jon OkunJanuary 27, 2026

Energy Storage

A kesterite solar cell held next to a chunk of metal

The Solar Underdog That Could Rival Perovskite

By Heather HunspergerJanuary 20, 2026

Renewable Energy

The Donut All-Solid State Battery

BEST Things I Saw in Vegas at CES 2026

By Matt FerrellJanuary 13, 2026

Tech

Sparking fingers touching a pile of graphene powder

How Graphene is Changing the World … Right Now

By Jon OkunJanuary 6, 2026

Misc

Swiftsolar's pyramid shaped solar technique

How Solar Changed in 2025 (And What’s Next)

By Vincent M.December 16, 2025

Energy Production

Sweetch power plant render

Why Coastal Cities Are Betting on Osmotic Power

By Heather HunspergerDecember 9, 2025

Energy Production

A bag of graphene powder in front of a solar panel

How Two Overhyped Materials Could Change Solar Forever

By Jon OkunDecember 2, 2025

Energy Production

A phone showing ChatGPT, with an arrow pointing at someone holding their power bill

AI’s Secret Impact on Your Power Bill

By Vincent M.November 18, 2025

Computers & AI

Plastic Recycling Not Requiring Sorting Could Be Coming

By Heather HunspergerNovember 11, 2025

Misc

An inside view of a solid state battery

Solid-State Batteries: Hype vs. Reality

By Jon OkunNovember 4, 2025

Energy Storage

Matt Ferrell in front of a diagram of a geothermal heat loop

How My Geothermal Heat Pump Really Performed (2 Years)

By Matt FerrellOctober 21, 2025

Renewable Energy